How severe is CVE-2007-3929?

CVE-2007-3929 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-3929 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3929?

CVE-2007-3929 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3929?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-3929 published?

CVE-2007-3929 was published on 2007-07-21 and last updated on 2026-06-16.

CVE-2007-3929

CVE-2007-3929 is a critical-severity vulnerability in Opera Opera Browser with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Opera Opera Browser
Published: 2007-07-21
Last modified: 2026-06-16

Description

Use-after-free vulnerability in the BitTorrent support in Opera before 9.22 allows user-assisted remote attackers to execute arbitrary code via a crafted header in a torrent file, which leaves a dangling pointer to an invalid object.

Frequently asked questions

What is CVE-2007-3929?: Use-after-free vulnerability in the BitTorrent support in Opera before 9.22 allows user-assisted remote attackers to execute arbitrary code via a crafted header in a torrent file, which leaves a dangling pointer to an invalid object.
How severe is CVE-2007-3929?: CVE-2007-3929 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-3929 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3929?: CVE-2007-3929 affects Opera Opera Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3929?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-3929 published?: CVE-2007-3929 was published on 2007-07-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*

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CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
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